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        <h2>
          <span class="refentrytitle">chnrecv</span>
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        <p>chnrecv — 
      Recieves data from the software bus.
    </p>
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      <div class="refsect1">
        <a id="idp94068384"></a>
        <h2>Description</h2>
        <p>
      Receives data from a channel of the inward named software bus.
      Implies declaring the channel with imode=1 (see also chn_k, chn_a,
      and chn_S).
      Note that 
      chnsend/chnrecv (which in Csound6 work identically to invalue/outvalue) 
      are usually used for the callback-based communication between Csound and 
      an external host. Use the chnset/chnget opcodes for sending and receiving 
      data inside Csound.
    </p>
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        <a id="idp94126336"></a>
        <h2>Syntax</h2>
        <pre class="synopsis">ival <span class="command"><strong>chnrecv</strong></span> Sname</pre>
        <pre class="synopsis">kval <span class="command"><strong>chnrecv</strong></span> Sname</pre>
        <pre class="synopsis">aval <span class="command"><strong>chnrecv</strong></span> Sname</pre>
        <pre class="synopsis">Sval <span class="command"><strong>chnrecv</strong></span> Sname</pre>
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      <div class="refsect1">
        <a id="idp94132768"></a>
        <h2>Initialization</h2>
        <p>
      <span class="emphasis"><em>Sname</em></span> -- a string that identifies a channel
      of the named software bus to read.
    </p>
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      <div class="refsect1">
        <a id="idp94134464"></a>
        <h2>Performance</h2>
        <p>
      <span class="emphasis"><em>ival</em></span> -- the control value read at i-time.
    </p>
        <p>
      <span class="emphasis"><em>kval</em></span> -- the control value read at performance time.
    </p>
        <p>
      <span class="emphasis"><em>aval</em></span> -- the audio signal read at performance time.
    </p>
        <p>
      <span class="emphasis"><em>Sval</em></span> -- the string value read at i-time.
    </p>
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              <th align="left">Note</th>
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        <a id="idp94139104"></a>
        <h2>Example</h2>
        <p>
      The example shows the software bus being used as an asynchronous
      control signal to select a filter cutoff.  It assumes that an
      external program that has access to the API is feeding the values.
    </p>
        <div class="informalexample">
          <pre class="programlisting">
        <span class="ohdr">sr</span> <span class="op">=</span> 44100
        <span class="ohdr">ksmps</span> <span class="op">=</span> 100
        <span class="ohdr">nchnls</span> <span class="op">=</span> 1

        <span class="oblock">instr</span>   1
           kc   <span class="opc">chnrecv</span>    "cutoff"
           a1   <span class="opc">oscil</span>     p4, p5, 100
           a2   <span class="opc">lowpass2</span>  a1, kc, 200
                <span class="opc">out</span>       a2
        <span class="oblock">endin</span></pre>
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        <a id="idp94149616"></a>
        <h2>Credits</h2>
        <p>
      </p>
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            <td>Author: Istvan Varga</td>
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            <td>2005</td>
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